package adv3;

import java.util.Arrays;
import java.util.Random;

public class RTest {

	public static void main(String[] args) {
		Random r = new Random();
		// for (int i = 1; i <= 20; i++)
		// System.out.println(r.nextInt());
		byte[] b = new byte[20];
		r.nextBytes(b);
		System.out.println(Arrays.toString(b));
	}

}
